Microarray-predicted marker genes indicating handling stress in maraena whitefish (Coregonus maraena)
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PROVIDER: PRJNA759227 | ENA |
REPOSITORIES: ENA
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Project description:Stress represents a major factor negatively affecting fish welfare in aquaculture. The head kidney is the effective centre for neuro-immune interactions in teleost as it is the main secretory organ of stress hormones and gathers major leukocyte populations. The present study investigated the influence of acute and long-term (chronic) handling stress in maraena whitefish. The aim was to define stress-related physiological changes in maraena whitefish using traditionally used and newly identified parameters. We determined the levels of the well-established biomarkers included triglycerides, lactate and cholesterol in blood plasma. In addition, the transcriptome of the head kidney of differently treated whitefish was recorded to identify new potential biomarkers and to investigate the relationship between immune functions and stress responses.
2021-09-01 | GSE183125 | GEO
Project description:Stress represents a major factor negatively affecting fish welfare in aquaculture. The objective of the present study was to identify and evaluate informative indicators for the welfare of maraena whitefish (Coregonus maraena) exposed to inconvenient temperatures. The present study compares the physiological impact of either acute or gradual temperature rise from 18 °C to 24 °C on maraena whitefish in aquaculture. We analysed microarray-based transcriptome profiles in liver, spleen and kidney and identified a common set of diagnostic biomarkers each indicating thermal stress induced by acute or gradual temperature rise in the selected tissues. We identified common and unique tissue- and stress mode-specific pathways reflecting metabolic, cell signalling and immunologic crossroads to cope with thermal stress.
2017-06-04 | GSE95422 | GEO
Project description:Potential biomarker genes for crowding stress in maraena whitefish Coregonus maraena
| PRJNA307694 | ENA
Project description:Stress represents a major factor negatively affecting fish welfare in aquaculture. The objective of the present study was to identify and evaluate informative indicators for the welfare and particular health status of maraena whitefish (Coregonus maraena) farmed at four different stocking densities. Transcriptome profiling revealed that numerous stress-related signaling pathways were activated in liver and kidney under ED and HD conditions, such as ERK/MAPK, mTOR, glucocorticoid receptor, SAPK/JNK and JAK/Stat signalling, as well as p38 and p53 signalling. Moreover, several stress-relevant effector pathways were found to be overexpressed including glycolysis and glycogen degradation. Strikingly, a high number of upregulated genes in kidney and in liver of fish kept at HD (compared to MD fish) were related to immunological processes, such as Acute-phase response signalling, B cell receptor signaling, CD28 signaling in T helper cells, and Interleukin-6 signaling.
2016-01-06 | GSE76543 | GEO
Project description:Stress represents a major factor negatively affecting fish welfare in aquaculture. The objective of the present study was to identify and evaluate informative indicators for the welfare and particular health status of maraena whitefish (Coregonus maraena) farmed at four different stocking densities. Transcriptome profiling revealed that numerous stress-related signaling pathways were activated in liver and kidney under ED and HD conditions, such as ERK/MAPK, mTOR, glucocorticoid receptor, SAPK/JNK and JAK/Stat signalling, as well as p38 and p53 signalling. Moreover, several stress-relevant effector pathways were found to be overexpressed including glycolysis and glycogen degradation. Strikingly, a high number of upregulated genes in kidney and in liver of fish kept at HD (compared to MD fish) were related to immunological processes, such as Acute-phase response signalling, B cell receptor signaling, CD28 signaling in T helper cells, and Interleukin-6 signaling. Four stocking density conditions were investigated: an uncrowded âmoderateâ density (MD: 33 kg trout/m³) , an elevated density (ED: 60 kg/m³ ), a low density (LD: 10 kg/m³ ), and high density (HD: 100 kg/m³). The experiment was performed twice, randomly assigned to identical glass tanks with MD (100 individuals), ED (180 individuals), LD (30 individuals), and HD (300 individuals). Trout were sampled 8 d after experimental onset.
2016-01-06 | E-GEOD-76543 | biostudies-arrayexpress
Project description:Potential biomarker genes for acute and gradual temperature stress in maraena whitefish Coregonus lavaretus
| PRJNA377091 | ENA
Project description:Coregonus maraena Transcriptome or Gene expression
| PRJNA302355 | ENA
Project description:We used microarrays and a previously established linkage map to localize the genetic determinants of brain gene expression for a backcross family of lake whitefish species pairs (Coregonus sp.). Our goals were to elucidate the genomic distribution and sex-specificity of brain expression QTL (eQTL) and to determine the extent to which genes controlling transcriptional variation may underlie adaptive divergence in the recently evolved dwarf (limnetic) and normal (benthic) whitefish. We observed a sex-bias in transcriptional genetic architecture, with more eQTL observed in males, as well as divergence in genome location of eQTL between sexes. Hotspots of nonrandom aggregations of up to 32 eQTL in one location were observed. We identified candidate genes for species pair divergence involved with energetic metabolism, protein synthesis, and neural development based on co-localization of eQTL for these genes with eight previously identified adaptive phenotypic QTL and four previously identified outlier loci from a genome scan in natural populations. 88% of eQTL-phenotypic QTL co-localization involved growth rate and condition factor QTL, two traits central to adaptive divergence between whitefish species pairs. Hotspots co-localized with phenotypic QTL in several cases, revealing possible locations where master regulatory genes, such as a zinc finger protein in one case, control gene expression directly related to adaptive phenotypic divergence. We observed little evidence of co-localization of brain eQTL with behavioral QTL, which provides insight on the genes identified by behavioral QTL studies. These results extend to the transcriptome level previous work illustrating that selection has shaped recent parallel divergence between dwarf and normal lake whitefish species pairs and that metabolic, more than morphological differences appear to play a key role in this divergence. Keywords: eQTL mapping, gene expression, linkage mapping, adaptive radiation, Coregonus, microarrays
2008-09-01 | GSE12068 | GEO
Project description:Coregonus huntsmani (Atlantic whitefish) genomic and transcriptomic data
| PRJNA855940 | ENA